Reamer.



H. P. MUSSLER.

BEAMER.

APPLICATION FILED JAN. a. 1911.

Patented June 13, 1911.

629i km0/aoco l F 134/024360@ m' uw er MDQMM Z6 M2M 922/, M 0% 7% f/m@ i@ MWMMWW Tof'll' 'whom 'fit 'ma/ 1f concern:

Be 'it'.lnownthataaI., HENRY F. Messiani7 '.citizenlvof the UnitedStates, and resident of Bridgeport,in thecounty of Fairfield and *Stateio-fiConnecticut; have invented certain new y 'andfiseitulellmprovements in Beamers, offl fwhich the 5 fol-lowing `is `a specification. This:i`nvention` relates to new and useful improvements in reamers and particularly "to the'class-knownpas expanding reamers.

'i`hef-invention `has for its object to provide ardurable, ,practicalpand simple form of reameirfwhieh will include but a minimum numberpof `parts consistent with the requireifmentsto be" accomplished and which may likewisevbe manufactured at a lesser cost thanother reame'rsot1 equal size and capacity.

It is a `further object of the invention to" pro'videan*improved form of clamp for the fblades.-oit-the.reameriwhich can be formed integral `with the-fb'odyiof the reamer, thereby pneventinglooseor detachable parts from allinggout yand Vbecoming lost, and finally to `so construct-the device that the cutting blades y'willv befnormally set back` from its forward lend, :better to. protect said blades from injury;y f1 .Y

lWith-these and ther objects in View lthe inventionaconsists!in the construction and "novel combination and arrangement oi parts hereinafter fully described, illustrated in the acoinpanyingndrawings,` and pointedout in the'cla'iins here'to appended, it being understood that' various-changes in the form, prolpe`itibn,=size, and minor details o'construction withinethe scope of the claims may be resorted tofwithout departing from the spirit or' sacrificing Aany of the advantages ofthe invention.-

j Similar char eters of reference denote like or correspondinglparts throughout the several .iig'ures'y ofthe accompanying drawings forming a part of thisl specification, and upon which- Y ,A

Figure 1, shows asideelevation of my improved form of reamer, the shank portion being broken away. Fig. 2, is a bottom end view of the reamer shown in Fig. 1. Fig. 37 is a central vert-ical sectional elevation taken on line 3-3 of Fig. 2. Fig. e, is a cross sectional viewtaken on line 1-4lof Fig. 1 and Fig. l5', is an enlarged detailed vertical sectional view through a portion of the reamer body, blade and adjusting nut, taken on line 5 of Fig. 1.

ff y Application filed .Tanuaiy 3A ssriinflor ,immensen-ir, oonnn'olrionnassignent/,ro i;n:nrini CONNECTICUT; A: 'oonrona'rronor con; 1

1.911. serial No. 600,635.

l Referring in detail to the drawings?, thev numeral 10 is applied to represent the body I' Specicatioiiof Letters Patent.:

June-V13, 11911, i` i of the reamer as a whole, 11 theV tang on the end of the-shank for engagement with a chuck in which the reamer may be seatedr The shank of the reamer is also provided with an annular groove 1Q which further r serves tonsupport the reamer in-a chuck. The upper end of the enlaigedlower end portion ofthe reamer is threaded as shown at 13 for the engagement of an adjusting 1,

nut 14 which is provided with a beveled4 inner edge 15 that engages the correspond'-` ingly beveled end portion liof the several'v cutting blades 17 slidably mounte'din longitudinalslots 18 formed inthe peripheral surfaces of the enlarged lower of the body 10.

end portion"v These slots are 'inclined with reference to the longitudinal. face of the body thus being deeper attheir upper end portion thanat their lowerend portion.

The inner edge of the cutting blade "17sisf also inclined with relation to their.. outer? Ledge and thus corresponds with the inclined surface of the sloti'eferred to. It will-.tliusaSO be noted that any vertical movement ofzitheffifvblades in their slots eiiected by means lfof. the adjusting -nut 14- will move all the bladesr: both longitudinally andl radially7 so 4as to 85 diminishl 'orincrease the distance between the respective cut-ting bladesand obviously the size of the tool. In the drawing I have. 'Y shown six slots and six cutting blades, or in other words, three pairs of cutting blades. fg'

Either pair of the blades may be readily taken out, ground and replaced, or adjusted upand down as occasion requires by theopj-.f` eration of a single screw 19 of which there are but three one for each pair of blades.-;

The lower end portions 20 of the reamer in'-v termediate of the bottomportion of the slots V18 are provided with a vertically disposed? port-ion of the reamer body and up :intothe same for a distance of approximately one inch, leaving the said intermediate portions 20 disposed to forni a yieldable clamp that bears against the adjoining inner side portions of the pair of blades that it serves to clamp by the adjustment of the before mentioned screw 19. This clamping portion 2O maybe provided with a cross cut 21 (see Figs. l and 2) which will obviously malte this member somewhat more flexible and responsive to the adjustment of the screw. It

under cut 21 that extendsover the outerend imil to insure it forminga solid and unbroken i shoulder ragainst which the blade is forced when clamped in position. From the foregoing construction it will be Vnoted that I have produced Va reamer which has all of the advantages required in a tool `of its sort yandwhich is perfectly durable, practical, and will operate in competition with any other reamer known to 'me'of equal size and quality of metal, and which includes a lesser number of parts. In actual count there are but 1'1 parts to my reamer as against perhaps 18 or 20vfound in the better grades 0f reamer with which I have tov compete. It is also true that the blades of this reamercan be removed, adjusted or replaced quicker and more conveniently than any of the competing reamers referred to. The blades of the device are obviously adjusted by first loosening the three screws 20 and then turning the nut 14 (up or down) as occasion requires. If the tool is to be made largerl the nut is turned down thus forcing the blades along with it-,while if it is to be made smaller the nut is turned up andthe` blades shoved against it and then secured in place bycthe said screws. A further ad-V vantage which my reamer has" above those )before mentioned, is that its lower extremity 26 is reduced slightly to form .an abutting end, the blades being normally seated above the face of the end, thereby insuring the said end striking the bottom of ahole slightlyin advance of that of the blades so as to pro7 tect the latter from injury. This extension also serves to an advantage' in the setting of the reamer in a chuck, when it is necessary to drive the reamer up in position, and which may be accomplished by simply hitting the end of this reduced endy portion with a hammer or other tool to set it in place and which can be done without injury to the ends of the blades. Having thus described my invention, what I claim and desire to secure by Letters Patent isi 1. In a reamer of the class described, the

' the slots.

combination of a body. having a series of combination with a body having a series Iof vertical slots therein, blades arranged in the slots, a yieldable clamping portion formed integral with the body and. arranged intermediate of the two blades, and meansl for forcing such yieldable integral clamp :portion against said blades to hold them. in position.

2. In a reamer of the class described, the combination of la body `having a series of longitudinal slots in its` periphery, aseries of cutting blades arranged in the slots, a

.yieldable clamping portion formed integral with the'body and intermediate of two ofV the slots and formed by a vertically disposed cutvin the lower end portionof the body, and means for-clamping the said clampingportion against the blades-when arranged in the slots.

43. In a reamer of the class described, the combinationv'of a vbody having a series of longitudinally disposed blade slots in its periphery, a vertically disposed undercut slotopening out'into the adjoining two blade slots to form a longitudinally disposed yieldable clamping portion, and means for forcing the said clamp portion'in to closev '4. In areamer of the class described, the

longitudinally disposed blade slots in its periphery, a vertically disposed undercutv slot opening out blades slots to form a longitudinally disposed yieldable clamping-portion and an annular disposed cross slot in the upper'part of the said clamping portion to make the same more flexible, an means for forcing vthesaid clamping portion into the said blade and slots. j

5. Ina reamer of the class described, the combination of a' body having a series of longitudinally disposed slots in its periph-v ery,a verticallyvdisposed concave undercut slot opening into the two adjoining blade slots, and a screw passing through the said clamping portion intov the main body of the reamer to clamp the one tothe other.

Signed at Bridgeport in the county of Fairfield and State of Connecticut this-28th' day of December A. D., 1910. y

` HENRY F. MUSSLER.'

Witnesses:

, C. M. NEWMAN,

J. H. VAN YORK, Jr.

into the. adjoining two 

